This project involves the conversion of an L-shaped barn which is located to the north of Lockerbie close to the Dryfe Water and River Annan.  The existing barn and farmhouse are attached via free standing walls and create a courtyard enclosure. To the north wing of the barn is a circular shaped 'gin-gang' structure, originally built as a horse engine to power a threshing mill.

We were commissioned by the clients to design a residential annexe and large farm office as part of the farming succession plan for a family who have lived and worked here for 30 years. The new barn conversion will provide living quarters on a single level for ease of access, enabling the younger generation to occupy the existing farmhouse.

Our strategy towards the design of the conversion is to respect the material presence of the original stone structure, positioning and designing new openings to have a proportional relationship with the existing openings, and in doing so avoiding excessively large areas of glazing.  The same intention is placed upon the roof. The arrangement of the layout has been planned to coincide with the found nature of the spaces.

Externally, there are no significant material interventions that would seek to undermine the original presence and character of the stone and slate structure, other than the inclusion of high performance composite windows and roof lights.  Where recessed infill walling is required we propose to incorporate smooth sawn stone which does not mimic but provides a subtle contrast in texture to the original random rough walling.  

The proposal adopts a number of sustainable measures embedded within the design including, a highly insulated fabric to minimise heat loss, robust design detailing, triple glazed high performance windows, whole house heat recovery system, air source heat pump delivering low temperature underfloor heating and hot water, woodburning stove providing secondary heat source and minimum impact upon existing mass of original stone walling.